“Hi! Happy Inside is a delicious cereal with three powerful ingredients to support digestive wellness,”​ said Aleta Chase, marketing director for the brand.

“This new cereal provides a proactive real food solution to people who want to incorporate more prebiotics and probiotics into their diet.”​

The cereal was developed at WK Kellogg Institute for Food & Nutrition Research, a global community of food researchers, designers and makers at Kellogg Co.

“Maintaining a healthy digestive system is essential to overall wellbeing and everyday life,”​ said Regan Jones, RD.

“Many registered dietitians know that probiotics alone aren’t enough, and the 3-in-1 combination of prebiotic, probiotics and fiber through real foods such as Hi! Happy Inside is one thing you can do daily to help support your overall health.”​

The cereal is available in three variants – Coconut Crunch, Blueberry and Strawberry – in 34.5oz resealable bags at Costco for a RRP of $12.99, and in six-count cup on Amazon for a RRP of £13.99.

Kellogg said individual cups will be available nationwide in food, drug and e-commerce channels in early 2019 for $1.99.